Patents by Inventor Masaki Nakai

Masaki Nakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10829903
    Abstract: A device for calculating construction assistance information includes: an acquisition unit that acquires, from a vibratory hammer construction machine, information that contains at least values indicating a eccentricity force of a vibratory hammer which the vibratory hammer construction machine imparts to a construction object, the number of impacts, and a depth of penetration of the construction object; and a calculation unit that calculates a accumulated impact force indicating a work load of construction on the basis of the information acquired by the acquisition unit.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 10, 2020
    Assignees: NIHON UNIVERSITY, Marufuji Sheet Piling Co., Ltd.
    Inventors: Shuichi Shimomura, Masaki Nakai, Yasuo Sato
  • Publication number: 20180058030
    Abstract: A device for calculating construction assistance information includes: an acquisition unit that acquires, from a vibratory hammer construction machine, information that contains at least values indicating a eccentricity force of a vibratory hammer which the vibratory hammer construction machine imparts to a construction object, the number of impacts, and a depth of penetration of the construction object; and a calculation unit that calculates a accumulated impact force indicating a work load of construction on the basis of the information acquired by the acquisition unit.
    Type: Application
    Filed: March 10, 2016
    Publication date: March 1, 2018
    Inventors: Shuichi SHIMOMURA, Masaki NAKAI, Yasuo SATO
  • Publication number: 20150334572
    Abstract: A radio access network apparatus (20) includes: first receiving unit (21) for receiving a radio control connection setup request signal transmitted by a mobile station that establishes a radio control connection; first transmitting unit (22) for transmitting a radio control connection setup signal to the mobile station, which has transmitted the radio control connection setup request signal; second receiving unit (23) for receiving a radio control connection setup complete signal transmitted by the mobile station, which has received the radio control connection setup signal; and allocating unit (25) for allocating, in a memory (24), a storage area for storing therein context information necessary for communication with the mobile station upon receiving the radio control connection setup complete signal.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 19, 2015
    Inventor: Masaki NAKAI
  • Publication number: 20130252582
    Abstract: A radio access network apparatus is provided including a receiver that receives, from a mobile station, a request signal including context information used to communicate with the mobile station. The apparatus also includes a controller that allocates a sub-section of a first storage area for storing the context information in response to receiving the request signal. The receiver receives, from the mobile station, a completion signal that indicates that the connection is established with the mobile station and includes the context information. The controller allocates a sub-section of a second storage area for storing the context information in response to receiving the completion signal, and the second storage area is different from the first storage area.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Inventor: Masaki NAKAI
  • Patent number: 8355322
    Abstract: A radio base station transmits a communication channel establishment rejection signal that contains information that denotes that a delay transmission that transmits the data later is to be executed to the mobile station and registers an identifier of the mobile station to a list if the communication channel establishment request signal contains the information that denotes that the data is not instantaneous data and the radio resource does not have free space equal to or greater than the threshold, and transmits a call signal that contains information that denotes that execution of the delay transmission is to be started to a mobile station whose identifier has been registered to the list if the radio resource has free space equal to or greater than the threshold.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: January 15, 2013
    Assignee: NEC Corporation
    Inventor: Masaki Nakai
  • Publication number: 20120034923
    Abstract: A radio base station transmits a communication channel establishment rejection signal that contains information that denotes that a delay transmission that transmits the data later is to be executed to the mobile station and registers an identifier of the mobile station to a list if the communication channel establishment request signal contains the information that denotes that the data is not instantaneous data and the radio resource does not have free space equal to or greater than the threshold, and transmits a call signal that contains information that denotes that execution of the delay transmission is to be started to a mobile station whose identifier has been registered to the list if the radio resource has free space equal to or greater than the threshold.
    Type: Application
    Filed: November 4, 2009
    Publication date: February 9, 2012
    Inventor: Masaki Nakai
  • Patent number: 8076896
    Abstract: An inverter controller comprising an AC motor as a load. A rectifying circuit converts AC power from an AC power source into DC power. A smoothing capacitor smoothens a DC voltage from the rectifying circuit. An inverter circuit converts DC power supplied via the smoothing capacitor into a desired frequency. A current detection circuit detects a output current of the inverter circuit. A voltage detection circuit detects a terminal voltage (Vpn) of the smoothing capacitor. A voltage command calculation circuit calculates a voltage command to the AC motor. A speed command calculation circuit calculates a speed command to be used when it is determined that the AC power source is in a power failure state or when the terminal voltage (Vpn) reaches a certain value.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: December 13, 2011
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Yoichi Yamamoto, Kazuhiro Nonaka, Masaki Nakai
  • Publication number: 20090230903
    Abstract: The present invention provides an inverter controller and a method for operating the inverter controller, enabling continuous operation without requiring difficult adjustments and without causing a trip or unnecessary torque ripple at overvoltage or undervoltage during an instantaneous power failure or during regenerative operation. An inverter controller (20) equipped with a voltage detection circuit (5) for detecting the terminal voltage of the smoothing capacitor (2) and a speed command selection circuit (6) for detecting an instantaneous power failure in an AC power source has a power calculation circuit (36) for calculating the power output thereof and a speed command calculation circuit (7) for calculating a power output target value and a speed command value during the instantaneous power failure.
    Type: Application
    Filed: May 29, 2007
    Publication date: September 17, 2009
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yoichi Yamamoto, Kazuhiro Nonaka, Masaki Nakai
  • Publication number: 20020107796
    Abstract: Both order slip 5 forwarded from user terminal 1 via network 3 like the Internet for example to Web server 2 providing online shopping services and order confirmation slip 6 forwarded from Web server 2 to user terminal 1 to confirm receipt of order slip 5, are monitored by settlement system 4 of a communication common carrier providing communication services to user terminal 1 which carrier acts in substitute for collecting communication charges or are detected through being relayed. Settlement system 4 collects payment (8) from user terminal 11 by invoicing user terminal 11 for online shopping charges only in respect of transactions for which the requisite pair of order slip 5 and order confirmation slip 6 are prepared together with communication charges when invoicing user terminal 11 for communication charges and pays the appropriate amount therefrom to Web server 2 (7).
    Type: Application
    Filed: February 7, 2002
    Publication date: August 8, 2002
    Inventor: Masaki Nakai
  • Patent number: 6296240
    Abstract: The present invention is directed to a connector holder for holding a connector during wiring of the connector which facilitates accurate positioning of protection material about wires of a cable. The connector holder includes a support member such as a pillar for mounting the invention to the wiring board. The connector holder includes a holder portion which houses a connector in an insertable and removable manner in such a condition that the wires can be connected thereto, and a positioning member is integrally provided with the holder portion and assists in the positioning of protection material about cable wires connected to the connector. The positioning member may also include an adjustable pin capable of positioning protection material arranged around the periphery of a cable in such a condition that the plurality of wires of the cable connected with a connector is arranged on both sides of the positioning member.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: October 2, 2001
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masaki Nakai, Yukio Shimomura, Hiroshi Kawamura
  • Patent number: 5097281
    Abstract: The disclosure relates to an exposure calculation apparatus which includes plural light measuring devices for measuring lights incident on a plurality of regions of a photographing image plane and outputting measured data of the lights; plural devices for detecting the focusing conditions of objects present in a plurality of the regions of the photographing image plane and outputting data on the focusing conditions; a position detecting devices for detecting the position which a main object occupies in the photographing image plane on the data on the focusing condition outputted from the focusing conditions detecting devices; calculation device for making a plurality of calculations each of which is made depending on at least one of the data of measured lights ouputted from the light measuring devices; and selecting devices for selecting one of the plurality of calculations on the position detected by the position detecting devices and the data on the focusing conditions of the position.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: March 17, 1992
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yasuteru Yamano, Takehiro Katoh, Akihiko Fujino, Kenji Tsuji, Shuji Izumi, Masaki Nakai, Nobuyuki Taniguchi